Nanny interview

Hey everyone! I have an interview coming up with a high net worth family. The first round is with their assistant and office manager. I have never had a nanny interview that wasn’t conducting with the family. Can someone please tell me what I’m likely to expect, and what questions I should ask that would help make me standout as a candidate, but that are also appropriate to be asked to the staff members since they aren’t the parents. Any advice would be much appreciated! T.I.A!